Typewriting machine



E. s. DODGE.

TYPEWRITING MACHINE.

APPLICATION FILED AUG-19,1921.

Patented Mar. 28, 1922.

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E. S. DODGE.

TYPEWRITING MACHINE.

APPLICATION man AUG.19, 1921.

1,41 1,238. Patented Mar. 28, 1922.

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50 2, of a fragment of the machine-that fragmentcomprisingtliQ-escapement mechanism and parts-of the -framework,-carriage and- UNITEDSTATES.

PATENT OFFICE.

ELBERTS. DODGE; OF ILIQNT'; NEW-1YORK, ASSIGNOB TOIREMINGTON TYPEwRITERI COMPANTYgOFILION, N'EWYORK, A-CORPORATION"OF"NEWYTOBK.

TYPEWRITING ACHI E;

Specification of LettersPatent. Pate t d31y[a 28 1922;

Application filed August 19, 1921. Serial iNo. 493,513.v

provide new and improved meansfor feeding the traveling carriage ste bystep from left to right as is desirab e in writing Hebrew and similarlanguages.

'A specific object of theinvention is to adapt the Remington typewritingmachine with very slight constructional changes to reverse the usualdirection of feeding movement.

In the machine to which my invention is shown as applied, a carriagethatsupports a roller platen on which type bars act is drawn alongstep-by-step under the control of an escapement, composed of a toothedwheel and feed dogs which coact with it. The carriages ofthese'mac-hines are thus drawn usually from right to left and in someinstances from left to right, the direction of, the step-by step traveldepending on the language to be typewritten. The carriage of a-machineembodying this inven tion is thus drawn from left to right. Such amachine may be used in writing the Hebrew language and others, which arewritten left. 7 1 H The invention consists of featuresuofconstruction,combinations and'arran'gements of parts, which are set forth herein anddefined in .the claims.

In the accompanying drawings, which f show only so much of 'a machineasit is believed to be necessary to lllustrate in setting forth a full,clear and exact de scription of the invention, and-in whichlikereference numerals designate like parts in the different views. w p

Figure 1 is aside "elevation and vertical longitudinal section on-theplane 1-1, Fig.

carriage propelling mechanism; 7

Figure 2 =18 a plan of a fragment comin lines that are-readfrom ri-ghtto prising parts of the .e'scapement Inechanism,

framework, carriage and carriage propelling mechanism;

Figure 3is a rear elevation andvertical cross section on the planes 3+3,Figure 2, of a fragment comprising the .escapement.

mechanism, carriage propelling mechanism.

3113- parts vof the carriage and framework; an

Figure 4 is a plan of a sliaft supporting. bracket.

Allthat is comprised in the machine and i that is not illustratedherein, with the exception of the type, is contained in the wellknownRemington typewriter which as illustrated herein, also comprises the topplate 5, platen carriage 7,}fixed rail 8, roll-, ers 'lO'and ll,rack-baillQ, carriage rack 15, hanger 18, dog rocker 20, feed dogs 21and 22, bracket'23, shaft 31, escapement wheel 34, pawl 36, ratchetwheel 38, spring drum 14, strap 415, and link 46 engaging the pin 47 ondog rocker 20 at its lower end.

The rack bail .12 which includes the arm 13 at its left endand a similararm at its right end, is. hinged to brackets fast. on the carriage bythe bolt 14. and another like it.

The rack 15 is rigidlyattached to the bail 12 by the screw 16 andanother like it, which pass throughthe rack and into the bail near itsends. The arrangement of this rack in the herein described machine issuch that the vertical face of each of the teeth 17 is on the right ofits sloping face instead of on the left as it is when the rack isusedin' a machine that writes English. In other words, the. right end ofthe rack in one machine is itsleft end in the other. The hanger orstationary dog rocker sup-. port, at the top, extendsacross the recess 6in the topplate 5 and is rigidly fastened to thetop plate by screwsdriven .into it from the upper side. The dog rocker 201is pivotallymounted in the hanger so that it may rock on the'pivot pin l9'fandanother. pivot pin secured in the hanger-at the left side of the rocker.Thebracket'23 stands on the hanger'18. The'base 24 ofthe bracket, ex

in the hub of the wheel and making contact with a seat on the shaft. Theblock 25, which ispart ofibracket 23, the front portion of which extendsinto the recess 9 in the fixed rail 8, formsthe bearing of journal 32and-the tube 27 extending through part 26 of bracket 23, forms thebearing of journal 33. Part 26 is split and the screw 28 passes throughthe sections and when it is tight the bearing tube 27 is clamped in thepart 26 of the bracket. Pawl 36 is mounted on pin 37 fast in es capementwheel 34: and spring 39 supported by another'pin fast in the escapementwheel forces the nose of the pawl against the teeth of the ratchet wheel38.. This ratchet wheel has internal teeth whichact on pawl 36 and hasexternal teeth besides. It is a duplex ratchet wheel and forms not onlypart of the means by which motion is imparted to the escape ment wheelfrom sleeve 10, but also a part of back spacing mechanism whichRemington machines usually contain.

In the Remington English-writing machine, the .ratchet wheel 38constitutes an enlargement ofa rotary sleeve which surrounds and hashearings on the shaft of the escapement wheel. and which the carriageturns, as it steps from right to left, so that a tooth of theescapement' wheel, on being released from the holding dog, moves to theright. The sleeve l0 in this machine is so turned, by force transmittedto it from thecarriage as it steps from left to right. Therefore thejoint operation of the escapement wheel and feed dogs is the same inthis machine as it is in the English-writing machines.

The strap 15, by which. the spring drum pulls the carriage alongstep-by-stcp and which'in machines used in writing English is connectedto an arm affixed to the carriage at its right end, passes fromdrum 4:4.

to the under side of the roller 48 and thence halfway around this rollerand from the top thereofto the part 51 ofan arm fast on the carriage atits left end. This arm includes the part 52 formed on and extendingbackward and upward from the base 53 which is fastened by screws .54: tothe carriage. Part 51 isofiset and extends downward from part 52 and hasat itsflower end a hook 55 and guard 56. nected to hook 55 by thelink'57 which is attached to the strap and through which the hookpasses. The roller 48, which has the flange 19, is loosely mounted on'the screw stud 50 which is attached to the fixed rail 8. Hence, thespring drum, when it imparts motion to the carriage, moves it from leftto right. V v

The bracket or supporting arm 58, which isattached at its right end tobracket 23 by the screws and which extends over sleeve 40, has at its:left end the block 60.

Strap 45 is con- This is a bearing block in which the short shaft 61 ismounted and from which it projects at both the front and rear faces ofthe block. The shaft 61 is parallel to shaft 31 and the forwardlyprojecting part of shaft 61 extends underneath the rack 15. The gear 62is fast on shaft 61 at its front end and normally is engaged by therack; The gear 63 is fast on this shaft at its rear end and meshes withgear43 on ,sleeve 40 behind the rack. spring drum 44 acts through rack15 on gear 62, and through gear 63v on gear a3, and through ratchet 38and pawl 36 on the escapement wheel 34, and that as the carriage stepsfrom left to right wheel 34; turns m the same direction as does theescapement wheel of. an English-writing machinefwhe'n its carriage stepsfrom right to left.

Whenever a printing key is. actuated, link 46, connected to theuniversal bar of the,

machine pushes the lower end of the dog rocker returns to its normalposition with the upward movement of the key.

The bracket or arm 58 and the bracket It will be seen that the rockerbackward. vThe carriage steps as" the 23, fastenedtogether by the screws59, form a unitary support which is detachably secured to the hanger 1Sand frame of the machine and on which is mounted operative connectionsbetween the feed rack andv feed dogs. This sup-port with the mechanismmounted on it may be taken out of the machine on the removal of screws29 and 30,

other changes neededand requiring the dolng of mechanical work are theaddition of anism including the sleeve 40, gear 4L3, short 1 shaft 61and gears 62 and 63. .The only 7 the roll 48 and arm 51 52-53, thereversal of the rack and the equipment of the type bars with suitabletype.

Although the invention is especially useful in Remington machines, it isnot intended hereby to restrict it to use in such machines.

What I claim is new and desire to secure by Letters Patent, is I 1. Inescapement mechanismof typewrita ing machines, which comprises anescapernent wheel, a shaft to which the wheel is affixed and which issupported at its ends by a fixed bracket, arotary sleeve surrounding andV rack, a gear meshing with said gear and fast on the short shaft at therear end therehaving bearings on said shaft, and means to impart motionfrom the sleeve to the wheel, only when the sleeve turns in onedirection, the combination of a gear fast on said sleeve, a short shaftparallel to said, shaft and having a bearingin an arm of said bracket, agear meshing with said gear and fast on the short shaft at one endthereof, and a gear with which the carriage rack engages and which isfast on the short shaft at its other end.

2. In escapement mechanism of typewriting machines, which comprises anescapement wheel, a shaft to which the wheel is afiixed and which issupported at its ends by a fixed bracket, the front end of the shaftbeing below and in front of the carriage rack and the wheel beingafiixed to the shaft close to its rear end, arotary sleeve surroundingand havingfbearings on said shaft, the front end of the sleeve beingclose to the bearing at the front end of the shaft, and means to impartmotion from the sleeve to. the wheel only when the sleeve turns in onedirection, the combination of agear fast on said sleeve behind thecarriage rack, a short shaft parallel to said shaft and having a'bearing in an arm'of said bracket and extendlng forward from said armand underneath the carriage of, and a gear fast on the short shaft atits front end and arranged to be engaged by the carriage rack.

3. In a typewritlng machine, the combination of a traveling carriage; afeed rack thereon; a dog rocker; feed dogs on said rocker; a unitarysupport detachably secured to the frame of the machine; and carriagefeeding devices mounted on said support and providing operativeconnections between said feed rack and said feed dogs, said connectionscomprising a feed pinion normally meshing with said rack, a toothedescapement wheel co-operative with said dogs, and constantlyintermeshing gears connecting said pinion with said escapement wheel.

4t. In a typewriting machine, the combination of a traveling carriage; afeed rack thereon; a dog rocker; feed dogs on said rocker; a unitarysupport detachably secured to the frame of the machine; and car riagefeeding devices mounted on said support and providing operativeconnections between said feed rack and said feed dogs,

said connections comprising ajfeed pinion' normally meshing with saidrack, a toothed escapement wheel co-operative withv said dogs, andconstantly intermeshing gears connecting said p1n1on with saidescapement wheel, one of said gears being rigid with capement wheelshaft, a gear wheel coaxial with said shaft, a detachable one-piecebracket,- a feed pinion mounted on said bracket, and a second gear wheelalso mounted on said bracket and adapted to intermesh with the firstrecited gear wheel.

6. In a typewritingmachine, the combination of a carriage, a sprlng drumconstantly tending-to turn to the left, a guide roller, a band or strapconnected to said drum and also to the left-hand end portion of thecarriage, saidband 0r strap running over said guide and tending to impelthe carriage rightward, a feed rack on said carriage a dog rocker, feeddogs on said rocker,

toothed escapement wheel, an escapement wheel shaft, a gear wheelcoaxial with said shaft, a detachable one-piece bracket, a feed pinionmounted on said bracket, and a second ear wheel also mounted on saidbracket and adapted to intermesh with the first recited gear wheel.

7'. In escapement mechanism of typewriting machines, in whichmechanism'an escapement wheel and shaft and means for trans- 'mittingmotion thereto from the carriage rack are included, and in which means ashort shaft and two gears are included, a supporting bracket on whichthe escapement .wheel shaft is mounted, an dan arm which is attached toapart of the bracket and extends over the shaft of the wheel and onwhich said short shaft and two gears are mounted, the short shaft havinga bearing in the arm and the two gears being fast on the short shaft.Signed at Ilion,' in the county of Herkimer, and State of New York this16th day of August, A. D 1921. r

1 I ELBERT S. DODGE. Witnesses:

H. J. KEELER, LINNIE F. BURNETT.

